Passive decoy-state quantum secure direct communication with heralded single-photon source

• URL: http://arxiv.org/abs/2402.02709v2
• Date: Tue, 20 Aug 2024 13:58:58 GMT
• Title: Passive decoy-state quantum secure direct communication with heralded single-photon source
• Authors: Jia-Wei Ying, Peng Zhao, Wei Zhong, Ming-Ming Du, Xi-Yun Li, Shu-Ting Shen, An-Lei Zhang, Lan Zhou, Yu-Bo Sheng,
• Abstract summary: We propose a high-efficient passive decoy-state QSDC protocol with the heralded single-photon source (HSPS) Our protocol has longer maximal communication distance about 17.975 km with average photon number of 0.01. Our work serves as a major step toward the further development of practical passive decoy-state QSDC systems.
• Score: 11.111792132689384
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum secure direct communications (QSDC) can directly transmit secret messages through a quantum channel without keys. The imperfect photon source is a major obstacle for QSDC's practical implementation. The unwanted vacuum state and multiphoton components emitted from imperfect photon source largely reduce QSDC's secrecy message capacity and even threaten its security. In the paper, we propose a high-efficient passive decoy-state QSDC protocol with the heralded single-photon source (HSPS). We adopt a spontaneous parametric down-conversion source to emit entangled photon pairs in two spatial modes. By detecting the photons in one of the two correlated spatial modes, we can infer the photon-number distribution of the other spatial mode. Meanwhile, our protocol allows a simple passive preparation of the signal states and decoy state. The HSPS can effectively reduce the probability of vacuum state and increase QSDC's secrecy message capacity. Meanwhile, the passive decoy-state method can simplify the experimental operations and enhance QSDC's robustness against the third-party side-channel attacks. Under the communication distance of 10 km, the secrecy message capacity of our QSDC protocol can achieve 81.85 times with average photon number of 0.1 and 12.79 times with average photon number of 0.01 of that in the original single-photon-based QSDC protocol without the HSPS. Our QSDC protocol has longer maximal communication distance about 17.975 km with average photon number of 0.01. Our work serves as a major step toward the further development of practical passive decoy-state QSDC systems.

Related papers

• Superior decoy state and purification quantum key distribution protocols for realistic quantum-dot based single photon sources [0.35342120781147623]
  We experimentally emulate two simple-to-implement protocols that allow practical, far from ideal sub-Poissonian photon sources to outperform state-of-the-art WCS. By engineering the photon statistics of a quantum dot's biexciton-exciton cascade, we show that either a truncated decoy state protocol or a heralded purification protocol can be employed.
  arXiv  Detail & Related papers  (2024-09-12T11:07:50Z)
• One-photon-interference quantum secure direct communication [2.9464311367375755]
  Measurement-device-independent (MDI) QSDC protocols can eliminate the security loopholes associated with measurement devices. We propose a one-photon-interference MDI QSDC protocol which transcends the need for quantum memory, ideal single-photon sources, or entangled light sources.
  arXiv  Detail & Related papers  (2024-04-03T14:51:58Z)
• The Evolution of Quantum Secure Direct Communication: On the Road to the Qinternet [49.8449750761258]
  Quantum secure direct communication (QSDC) is provably secure and overcomes the threat of quantum computing. We will detail the associated point-to-point communication protocols and show how information is protected and transmitted.
  arXiv  Detail & Related papers  (2023-11-23T12:40:47Z)
• Practical quantum secure direct communication with squeezed states [55.41644538483948]
  We report the first table-top experimental demonstration of a CV-QSDC system and assess its security. This realization paves the way into future threat-less quantum metropolitan networks, compatible with coexisting advanced wavelength division multiplexing (WDM) systems.
  arXiv  Detail & Related papers  (2023-06-25T19:23:42Z)
• Experimental demonstration of scalable quantum key distribution over a thousand kilometers [0.0]
  Quantum key distribution offers protection against quantum computer attacks. Long-distance transmission is problematic since the essential signal decay in optical channels occurs at a distance of about a hundred kilometers. We present the experimental demonstration of the TQ-QKD protocol allowing quantum key distribution over 1079 kilometers.
  arXiv  Detail & Related papers  (2023-06-07T16:58:52Z)
• Device-independent quantum secure direct communication with single photon sources [11.0062157973359]
  Device-independent (DI) QSDC can guarantee the communication security relying only on the observation of the Bell inequality violation. We propose a DI-QSDC protocol with practical high-efficient single photon sources.
  arXiv  Detail & Related papers  (2023-03-28T10:00:24Z)
• Quantum Key Distribution Using a Quantum Emitter in Hexagonal Boron Nitride [48.97025221755422]
  We demonstrate a room temperature, discrete-variable quantum key distribution system using a bright single photon source in hexagonal-boron nitride. We have generated keys with one million bits length, and demonstrated a secret key of approximately 70,000 bits, at a quantum bit error rate of 6%. Our work demonstrates the first proof of concept finite-key BB84 QKD system realised with hBN defects.
  arXiv  Detail & Related papers  (2023-02-13T09:38:51Z)
• QUICK$^3$ -- Design of a satellite-based quantum light source for quantum communication and extended physical theory tests in space [73.86330563258117]
  Single photon source can enhance secure data rates in satellite-based quantum key distribution scenarios. payload is being integrated into a 3U CubeSat and scheduled for launch in 2024 into low Earth orbit.
  arXiv  Detail & Related papers  (2023-01-26T15:34:11Z)
• Single-photon-memory measurement-device-independent quantum secure direct communication [63.75763893884079]
  Quantum secure direct communication (QSDC) uses the quantum channel to transmit information reliably and securely. In order to eliminate the security loopholes resulting from practical detectors, the measurement-device-independent (MDI) QSDC protocol has been proposed. We propose a single-photon-memory MDI QSDC protocol (SPMQC) for dispensing with high-performance quantum memory.
  arXiv  Detail & Related papers  (2022-12-12T02:23:57Z)
• Efficient room-temperature molecular single-photon sources for quantum key distribution [51.56795970800138]
  Quantum Key Distribution (QKD) allows the distribution of cryptographic keys between multiple users in an information-theoretic secure way. We introduce and demonstrate a proof-of-concept QKD system exploiting a molecule-based single-photon source operating at room temperature and emitting at 785nm.
  arXiv  Detail & Related papers  (2022-02-25T11:52:10Z)
• Enhancing secure key rates of satellite QKD using a quantum dot single-photon source [0.5420492913071214]
  Global quantum secure communication can be achieved using quantum key distribution (QKD) with orbiting satellites. Existing techniques use attenuated lasers as weak coherent pulse (WCP) sources, with so-called decoy-state protocols, to generate the required single-photon-level pulses. We improve on this limitation by using true single-photon pulses generated from a semiconductor quantum dot (QD) embedded in a nanowire.
  arXiv  Detail & Related papers  (2020-09-24T16:55:16Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.